JP2000147154A - Exterior parts for clock and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sufficient antibacterial effect to the outer surface of a watch case made of titanium or a titanium alloy. SOLUTION: On the outer surface of a watch case body 2 made of titanium or a titanium alloy, a number of glass fine particles 6 are dispersed in a transparent resin for coating, then heat treatment is made, and a covering where the glass fine particles 6 are dispersed in a transparent resin layer 4 is formed. Then, liquid containing an antibacterial material 5 made of silver or silver compound is applied onto the surface of the covering, and a heat treatment is carried out, thus dispersing the antibacterial material 5 in the glass fine particle 6, and forming an antibacterial covering 3. In the case of the watch case body 2 made of titanium or titanium alloy, the antibacterial material 5 cannot be easily dispersed into the surface-layer part. On the other hand, in the case of the glass fine particle 6, the antibacterial material 5 can be sufficiently dispersed into the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watch external part and a method for manufacturing the same.

[0002]

2. Description of the Related Art Recently, antibacterial treatment has been considered on the surface of a watch external component such as a metal watch case. On the other hand, a method of subjecting a surface of a metal article made of stainless steel, aluminum, or the like to an antibacterial treatment is known (see JP-A-10-15041). In this antibacterial treatment method, a liquid containing an antibacterial material made of silver, a silver compound, or the like is applied to the surface of a metal article and heated to diffuse the antibacterial material into the surface layer of the metal article.

[0003]

In the conventional antibacterial treatment method, a sufficient antibacterial effect can be obtained when the material of the article is stainless steel or aluminum. In some cases,
It was found that the antibacterial material was not easily diffused into the surface layer of the article, and that a sufficient antibacterial effect could not be obtained. On the other hand, titanium or a titanium alloy is used as a material for a watch exterior component such as a watch case. Therefore, in the case of a watch external part such as a watch case made of titanium or a titanium alloy, there has been a problem that a sufficient antibacterial effect cannot be obtained by the above conventional antibacterial treatment method.
An object of the present invention is to provide a surface of a watch exterior component made of titanium or a titanium alloy with a sufficient antibacterial effect.

[0004]

According to the first aspect of the present invention, there is provided a watch external part comprising glass particles having an antibacterial material diffused in a transparent layer on a surface of a watch external part body made of titanium or a titanium alloy. Are formed to form an antibacterial coating. According to a fourth aspect of the present invention, there is provided a method for manufacturing a watch exterior component, comprising: forming a coating formed by dispersing glass fine particles in a transparent layer on a surface of a watch exterior component body made of titanium or a titanium alloy; A liquid containing an antibacterial material made of silver or a silver compound is applied to the surface of the substrate and heated to diffuse the antibacterial material into the glass fine particles. According to the present invention, since an antibacterial coating formed by dispersing glass fine particles in which an antibacterial material is dispersed in a transparent layer is formed on the surface of a watch external component body made of titanium or a titanium alloy, A sufficient antibacterial effect can be imparted to the surface of a watch exterior part made of a titanium alloy.

[0005]

FIG. 1 is an enlarged sectional view showing a part of a main part of a wristwatch according to an embodiment of the present invention. Watch case of this watch (exterior parts for watch)
1 has a structure in which an antibacterial coating 3 is formed on the outer surface of a watch case main body 2 made of titanium or a titanium alloy. The antibacterial film 3 is formed of silver or a silver compound (silver-copper alloy, organic silver compound, silver chloride, silver sulfide, silver oxide, silver sulfate) in a transparent resin layer 4 formed on the outer surface of the watch case main body 2. ) Is made by dispersing glass microparticles 6 in which antimicrobial material 5 is dispersed. In this case, almost half of the glass fine particles 6 protrude from the surface of the transparent resin layer 4. In FIG. 1, what is indicated by reference numeral 7 is a watch glass, which is attached to the upper part of the watch case 1 via a glass packing 8.

Next, a part of a method of manufacturing the watch case 1, that is, a method of forming the antibacterial film 3 will be described. First, a transparent resin for forming the transparent resin layer 4 in which a large number of glass particles 6 are mixed is prepared.
Next, the prepared product is applied to the outer surface of the watch case main body 2 by a spraying method, a dipping method, or the like, and then subjected to a heat treatment, as shown in FIG. A coating 3a formed by dispersing glass particles 6 in the layer 4 is formed. Next, as shown in FIG. 3, the liquid 1 containing the antibacterial material 5 made of silver or a silver compound is used.
A container 12 containing 1 is prepared. The liquid 11 containing the antibacterial material 5 is obtained by dispersing or dissolving fine particles of the antibacterial material 5 in water or an organic solvent. Next, the watch case body 2 having the coating 3a in the liquid 11 in the container 12
Is entirely immersed, and the liquid 11 containing the antibacterial material 5 is applied to the surface of the coating 3a. Next, when the watch case main body 2 is taken out of the container 12 and subjected to a heat treatment, the antibacterial material 5 in the liquid 11 applied to the surface of the coating 3a is diffused into the glass microparticles 6, as shown in FIG. The antibacterial coating 3 is formed. Next, the surface of the antibacterial film 3 is washed.

By the way, in the case of the glass particles 6, the antibacterial material 5 can be sufficiently diffused therein. Therefore, when the antibacterial coating 3 formed by dispersing the glass microparticles 6 in which the antibacterial material 5 is dispersed in the transparent resin layer 4 is formed on the outer surface of the watch case body 2 made of titanium or a titanium alloy, Thus, the outer surface of the watch case body 2 can have a sufficient antibacterial effect. In addition, the antibacterial coating 3 containing the glass particles 6
The outer surface of the watch case main body 2 can be protected from scratches, fingerprints and fats.

The present invention is not limited to a watch case,
It can be applied to other watch exterior parts such as watch bands and bezels.

[0009]

As described above, according to the present invention, an antibacterial composition obtained by dispersing glass fine particles having an antibacterial material dispersed in a transparent layer on the surface of a watch external component body made of titanium or a titanium alloy. Since the functional coating is formed, the surface of the watch exterior component made of titanium or a titanium alloy can have a sufficient antibacterial effect.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a part of a main part of a wristwatch according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a film formed by dispersing glass fine particles in a transparent resin layer is formed on the outer surface of a watch case main body when an antibacterial film is formed.

FIG. 3 is a cross-sectional view for explaining a case where a liquid containing an antibacterial material is applied to the surface of the antibacterial film when the antibacterial film is formed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Watch case 2 Watch case main body 3 Antibacterial film 4 Transparent resin layer 5 Antibacterial material 6 Glass fine particles

Claims (4)

[Claims] 1. An antibacterial coating formed by dispersing glass fine particles in which an antibacterial material is dispersed in a transparent layer is formed on the surface of a watch exterior component body made of titanium or a titanium alloy. Watch exterior parts. 2. The watch exterior component according to claim 1, wherein the watch exterior component body is a watch case body. 3. The method according to claim 1, wherein
The exterior part for a timepiece, wherein the antibacterial material is silver or a silver compound. 4. A coating formed by dispersing glass fine particles in a transparent layer is formed on the surface of a watch external component body made of titanium or a titanium alloy, and an antibacterial material made of silver or a silver compound is formed on the surface of the coating. A method for manufacturing a watch exterior part, comprising spreading the antimicrobial material in the glass microparticles by applying and heating a liquid containing the liquid.